Blood enters a kidney through a _________.

Oxygenated blood enters the kidney through the :

Blood enters the glomerulus through its ______arteriole and leaves the glomerulus through its _____arteriole.

Clean blood leaves a kidney through the renal vein .

In alimentary canal of humans, The food enters through ____________

The blood in the artificial kidney flows through channels or tubes bounded by "________"

Air enters into the lungs through the

Grinded food enters into the midgut through :-

Ureter, blood vessels and nerves enter in to the kidney through :-

Energy enters in a food chain through:

The polio virus enters the human body through